Cars equipped with eCall system can automatically call the emergency service center in case of accident. Isl78692 lithium ion battery charger is designed to support emerging global emergency call systems, such as eCall program in Europe and OnStar in the United States Â® (anjixing), the former can provide rapid assistance to drivers in accidents within the EU, and the latter provides safety and protection services within the United States.
The battery temperature monitoring capability of isl78692 charger and its 4.1 V low output voltage help to prolong the service life of LiFeP04 battery. The high integration of isl78692 makes it only need five peripheral components to realize the programming of charging current. In addition, it adopts 3mm x 3mm DFN compact package, so the complete solution is easy to adapt to the space constraints of PCB. Isl78692 also provides a unique thermal fold back feature of charging current, which can automatically reduce the battery charging current to prevent overheating, so as to realize the design of high reliability and small PCB occupied area.
"OEM manufacturers need a steam gauge battery charger to prevent the on-board backup battery from discharging rapidly when parking for a long time," said Philip Chesley, vice president of INTERSIL precision products. "Isl78692 adopts INTERSIL's proprietary power management technology. As a solution, it provides the lowest leakage current in the industry and the function set optimized for eCall automotive applications."
Characteristics and specifications:
Â·Complete charger for single lithium battery
Â·-3ua leakage current (maximum) in the temperature range of 40 Â° C to 85 Â° C can prolong the power supply time of the backup battery when the VIN power supply circuit is disconnected
Â·The maximum 1A programmable charging current allows a compromise balance between battery charging time, heat dissipation and expected battery life
Â·Ensure that the working voltage can be as low as 2.65v after starting to prevent power failure during cold start
Â·1% initial voltage accuracy provides accurate charging voltage control to prolong the service life of the battery
Â·Integrated power transistor and current sensor
Â·Conduct 10% trickle charging for the fully discharged battery until it reaches the minimum charging voltage of 2.8V
Â·NTC thermistor input. Protect the battery by monitoring the battery temperature and turning off the charger when the battery temperature is higher than the set charging temperature
Isl78692 lithium ion battery charger is now available. The product is packaged in 10 pin 3mm x 3mm DFN, with a unit price of US $0.99 and an order of 1000 pieces. The unit price of the evaluation board isl78692eval1z supporting isl78692 is USD 56.
INTERSIL is a leading supplier of innovative power management and precision simulation solutions. The company's products are applied to increasingly intelligent, mobile and high power consuming electronic devices to help achieve progress in the field of power management, so as to improve efficiency and prolong battery life. With a strong intellectual property portfolio and a rich history of design and process innovation, INTERSIL is a trusted partner of leading companies in some of the world's largest markets, such as industry and infrastructure, mobile computing, automotive and aerospace.